(1) Why Do Cotton Fabrics Shorten After Washing?
1. Cotton material
Pure cotton fabric is made of fiber. When the fabric penetrates, water molecules will enter the cotton fiber, which will cause the fiber to expand. The longer the time in the water, the greater the shrinkage. Of course, this is only relevant, and it will not shrink endlessly.
2. Fabric processing
In the process of dyeing pure cotton fabrics, the fibers are stretched by a specific external force. After finishing this stretch will be temporarily in a "stable" state. When you soak in water for washing, the water will gradually weaken the connection between the fibers of the fiber, the friction on the surface of the fiber will decrease, the temporary "steady state" will be destroyed and the fiber will return to or approach the initial equilibrium state. In general, during the process of weaving, weaving, dyeing and finishing, it needs to be stretched several times and the rate of shrinkage of the fabric with higher tension is higher and vice versa.
3. Fabric yarn weaving
Everyone should know that the weaving of cotton bed linen can be roughly divided into 1288 * 68, 130 * 70/133 * 72/40 satin / 60 satin / 80 satin etc. The higher the weave of the yarn, the higher the quality. shrink long after pre-shrinkage).
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